Using a schema with useChat

[janwirth]

Feature Description

Adding a schema option to useChat should allow me to render chat messages other than string.

Use Case

I would like to enrich our chat interface with custom UI like chatbot buttons.

Additional context

No response

[mishushakov]

I agree, want a mix between chat response and structured

[janwirth]

I found a solution, happy to share when it's tested. my discord is jannibeu

[mishushakov]

My current workaround is adding a "commentary" field for outputting LLM thought process.

[janwirth]

I'm injecting a zod schema and a prompt to communicate in JSON, then I put the current streamed result through jsonrepair, then zod.

[lgrammel]

Would tools work for you?

[janwirth]

I tried to get tools to work but really couldn't.

• choosing a tool wasn't clear
• free form text was also required

I think I see now how they could be used but yeah I wasn't smart enough. We have something we like now.

[janwirth]

For me, it was too difficult to control when a tool would be called

[lgrammel]

ai sdk 5 supports generic ui messages that can be tailored to your application, e.g. metadata, data parts